And what is more, the deed was caught on film — pre-emptively balking the crumbling Nicaraguan dictatorship of the ability to, say, blame the killing on the Sandinista rebels.

Warning: This is the execution footage.

Stewart was stopped in a marked press vehicle in Managua, ordered to lie down, and then kicked and shot through the head while colleagues looked on. Though his summary execution by national guardsmen was taped by fellow journos in the convoy, the reasons for it are well into the fog of war: even the identity of the guardsman who pulled the trigger isn’t known. (The commander of the roadblock would claim that it was a “Private Gonzalez” who conveniently died in combat later the very same day.) The immediate “investigation” promised by dictator Anastasio Somoza didn’t really have much chance to get off the ground before Somoza himself had to take to the skies fleeing, on July 17, the collapse of his own regime. Whether the executioner also escaped the revolution, fled into exile, became a Contra guerrilla, or actually did die in the fighting, only God can say.

“The murder of American newsman Bill Stewart in Nicaragua was an act of barbarism that all civilized people condemn,” said U.S. President Jimmy Carter, who of course was backing Somoza.* “Journalists seeking to report the news and inform the public are soldiers in no nation’s army. When. they are made innocent victims of violence and war, all people who cherish the truth and believe in free debate pay a terrible price.”

Stewart’s career and murder are a principal inspiration for the 1983 film Under Fire.